Sewing-machine.



J. BOLTON & J. WEISS.

SEWING MACHINE.

APPLICATION FILED DEO.4,1905.

Patented Nov. 10, 1908..

' States,

in which the drive shaft journa ed in the.

JAMES BOLTON AND JOHN WEISS, OF CHICAGO, ILLINOIS,

sEwme-Macmnn.

No. 9os,4ee.

Specification of Letters Patent. Application mm December 4, 1905. Serial No. 290,069. r

' Patented nov. 10,1908.

To an whom it may-concern:

Be it known that we,JAMEs BoL'roN and.

JOHN WnIss, both citizens of the United and residents of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Im provements in Sewing-Machines, of which the following is a full, clear, and exact specification.

This invention relates to sewin machines overhanging arm is lubricated by a passage in the bearing thereof and has secured upon its outer-end a "balance wheel, the hub of which constitutes a pulley for the driving belt and particularly to sewing machines in which sald hub also constitutes the pulley for'a belt directly driving a shuttle carrier.

dlscharging In sewing machines prior toour invention, the construction and arrangement of the balance wheel has been such that-the lubricant applied to the. shaft unavoidably drops therefrom at a point between the hearing of the shaft and the balance wheel and externally of the upright arm of the machine with the result that the drippinglubricant not only defaces but injures the goods being sewed and as to certain fine fabrics and particularly those in delicate colors, entirely destroys them for subsequent use and this -.very frequently no matter how much care is taken in supplying the lubricant to the drive shaft or in wiping the arm and bed plate of the machine.

The object ofour invention is to provide a simple and effective means whereby oil from the bearing'of the main or drive shaft of a sewing machine will. be prevented from escaping outside the upright arm of' the machine and whereby all drip therefrom will be discharged into a pan located inside of the base of theupright supporting the overhanging arm of a sewing machine and thereby prevent any possibility of the goods being sewed from at any time soiled or injured thereby.

these endsiin view, our invention consists of certain features of novelty and construction, combination and arrangement of parts by which said objects and certain other objects hereafter appearing are at-' tained, all as fully describe with reference I to the accompanying drawings, and more particularly pomted out in the claim.

In said drawing: Figure 1 indicates a 'actuates a vertical shaft vertical section at one side of the drive shaft of the arm and bed plate of a sewing machine, in which the shuttle-carrier or hook is driven by an endless belt supported at oneend. upon a pulley on the balance wheel or hub thereof,v and Fig.2 is a section on the line 2, 2 of Fig. 1. v

3 indicates the bed plate of a sewing machine upon which is mounted a vertical member or support 4 of the overhanging arm the drive shaft 6, which projects through and has its bearing ina hanger 7 forming a part of the rear sidewall of the overhanging arm, which bearing is supplied with oil as usual through the duct 8.

in which is ournaled in the usual manner, v

Keyed or otherwise secured to the outer projecting end of the shaft 6 is a balance wheel 9, the hub 10 of which-has an endwise bearing against'the outer'end .of the hanger 7- but unlike'other hubs, is provided with an annular groove, which, together with the flange 11, form a chamber 11*. The walls of the chamber 11 project inwardly beyond the end bearing of the hub against the hanger and to such a distance will insure the conducting of the oil discharging between these end bearings and by means of the annular flange ll inwardly to a point immediately above the drip pan (not shown) commonly located at the bottom of the up right 4:. The result of this construction is that no lubricator oil escaping from the bearing of'the main shaft can possibly creep or discharge outside of the upright 4 at all and therefore to the goods upon which the machine, is operating, nor is it possible f r the lubricant to be conducted upon the outer surface of the balance wheel and thence discharge upon such goods, for the reason that it will fall by gravity from the inner edge of the flange and therefore has no opportunity to' reach the outer surface referred to. As shown in the drawing, the flange or hub of the balance wheel may also form a pulley for an endless belt 12 passing around a wheel 13 at the base of the arm for actuating'a shuttle carrier or hook 14.

Although our invention is applicable to sewing machines in which. the drive shaft in the upright of the arm, it is particularly adapted to sewing machines in which the shuttle carrier or hook is connected by an endless belt directly with the drive shaft as h ein shown and described and for the reason that the relative' arrangementbf the fly wheel and the bearing of the main shaft is such that an endless belt may be conveniently placed inposition and its connections made without disturbing the continuity of the belt which is essential'to its best'operation in order that it may be placed in its operative position with an entire absence of slack, and thereafter, as far as may be, not require any adjustment for slack. p

In conclusion it should be observed that by having the'pulley for the belt integral with the balance wheel and securing the latter to the shaft by the screw 15, as shown, an important result isseenred in that the-balance wheel may be maintained in a loose position on the shaft and turned until the shuttle or shuttle carrier, as may be, is timed with the needle; and that as soon as this v is one, the balance :wheel may then be finally tightened upon the shaft by means of said set-screw,

Having described our invention, what we claim as new and desire to secure'by Letters Patent is: p

A sewing machine comprising in combination the over-hanging arm, the hollow standard thereof, a bearing in said arm, the power shaft supported therein, the balance wheel mounted upon said shaft, and a flange sure rounding the shaft and projecting from the balance Wheel to a point inside the standard, substantially as described.

In witness whereof, we have hereuntoset 35' our hands this 2nd day" of December 1900.

JAMES BOLTON. JOHN WEISS. r

In the presence of witnesses- JNo.G..ELLIo'rT,, M. S. REEDER. 

